You wrote: “No, he stood/sat, reclined in the mosque or anywhere else and repeated/read the Quran to the people in the language they understood, as he had heard it in order to show them how to follow Allah.”
Yes, indeed he stood/reclined/sat, whatever, to deliver Quran to others, but when it was time to do Salat, he stood up, did wudu, and solemnly prayed, so did companions behind him. Your “No” carries no weight.
You wrote: “A teacher does not repeat 1+1=2 over and over again to teach maths to their students, he teaches 1+1=2, 1+2=3,1+3=4, etc. To limit the Quran to just a few verses to recite 5 times a day, 24/7 is a ritual that has no bases in reality.”
Irrelevant example. Teachers in general as you and me, and prophets/messengers are not in the same league. Your second observation is based on your misunderstanding of the purpose of Salat, which is Dhikr Allah. Reading small portion or large portion of Quran has no bearing on this purpose.
You wrote: “There is no verse in the following that can mean the Messenger had revelation other than the Quran, or any story about him communicating to his family what he had heard. Fairy tale stories made up by the 'scholar' equivalent of Omar Khayyam.”
As per my understanding, 53:3-4 are clear reference to prophet’s speech, which included both his description of what happened and possibly initial quranic verses as well.
Communicationg to his family: How is it so difficult to comprehend? Even we mortals when experience something extra ordinary talk to our families and friends. Prophet’s experience was beyond his imaginations as well as ours, and he did not talk about it to his family and friends? Yet, he was required to convey this message? Then, people at large without him talking about it started labelling and circulating rumors about his mental condition and behavior? If it did not happen, then 53:2-3 were not needed. These verses came to clearly dispel those labels. What people wrote subsequently, even if partially true, can only strengthen the scenario presented in these verses.